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By analyzing the issue of chaos synchronization in the literature, it can be noticed the lack of a general approach, which would enable any type of synchronization to be achieved. Similarly, there is the lack of a unified method for synchronizing both continuous-time and discrete-time systems via a scalar signal. This paper and the companion one [1] aim to bridge these two gaps by presenting a novel...
During the 3D Stacked ICs fabrication, various defects in TSVs could come up, resulting both in performance and reliability reduction. These defects could produce serious problems in the early stages of fabrication. The situation gets more difficult because there is limited test access to TSVs, before and after wafer thinning. An analysis of effectiveness on oscillation-based pre-bond TSV test methods,...
Through Silicon VIAs (TSVs) are critical elements in three dimensional integrated circuits (3D ICs). Various defects may occur during their fabrication process, the bonding stage or during their useful lifetime. In this work a testing method is suggested to detect the defects using a post-bond oscillation test scheme. Variations in the output signal's frequency are shown to detect the defects in TSVs...
The Level-1 Data Driver Card (L1DDC) is designed to fulfill the needs of the New Small Wheel, which will be used in the upgraded ATLAS experiment detectors. L1DDC's function is to concentrate the data from multiple front-end boards and transmit them through a network interface, to the control room. The proper operation of the L1DDC is critical for the credibility of the ATLAS experiment, thus extensive...
The design and implementation of an Electrical Impedance Tomography system with 64 electrodes placed on a 2-D circular pattern is presented. The system's architecture and the algorithm for solving the reverse E/M problem and deriving the conductivity distribution are discussed. Experimental measurements are presented confirming the proper operation.
In this paper, a current-controlled fractional-order memristor model and its emulator are proposed. The emulator is built using two second generation current conveyor (CCII) and fractional-order capacitor. It is shown that the effect of the fractional order is clearly noticeable in the circuit response. PSPICE simulations are introduced for different values of the fractional order showing noticeable...
Radio on Free-space optical communication systems have been gaining much attention due to their high bandwidth capabilities, addressing the emerging high demands for massive data transfers in wireless communication networks without the need for optical fibers. Thus in this work, we present a single-input multiple-output orthogonal frequency division multiplexing wireless optical communication system...
In this work a 2×2 multiband, non-uniform Electromagnetic Band Gap (EBG) antenna array is proposed for the realization of a MIMO (Multiple Input-Multiple Output) wireless communication system. It is proved that the strong reduction of mutual coupling among the array's elements, ensured by this EBG lattice type, is capable of enhancing the MIMO channel capacity. The channel impulse response was estimated...
A method is proposed for designing LUT-based Moore FSMs. The method is based on splitting the set of classes of pseudoequivalent states. There are given example of design and results of investigations. The method allows obtaining FSM logic circuits having less amount of LUTs than known from literature methods.
This paper presents the design of a LVDS input/output interface circuit for the next generation of Associative Memory (AM) chip. The bandwidth of Associative Memories is a critical aspect that needs to be addressed in order to increase the number of comparisons per second. Our aim is to transfer parallel buses at 500 MHz. Since a large number of receivers/drivers will be included in the AM chip, power...
Massive or large-scale multiple-input multiple-output (MIMO) is an emerging technology for wireless communications and a strong candidate for 5G. Massive MIMO schemes demand heavy computations for precoding, channel estimation and data detection due to the volume of involved data and the requirement for operations such as matrix inversion. Several methods have been proposed for matrix inversion, which...
In this work, a new dual band antenna is presented. The antenna is implemented on a quarter mode Substrate Integrated Waveguide (SIW) technology by introducing a slit shaped modification. The dual band antenna concept has been demonstrated for the 2.4GHz and 5GHz WiFi bands but the approach is readily applicable to centimeter and millimeter wave applications due to the low loss characteristics of...
A three dimensional printer using step motors from 3.5-inch disk drives was built for our undergraduate research thesis project. An Arduino microcontroller was in charge of controlling the steppers through the DC drivers and a 3D pen was used as the printing unit. The program was created with the Arduino suite and the design of the drawing with the open source Grbl using g code. For the axes, three...
In this paper, pole-zero estimation, analysis and simplification of the transfer function for a two-stage operational amplifier (op-amp) is presented. The circuit design considered is a folded cascode complementary metal oxide semiconductor (CMOS) op-amp incorporating both Miller and negative Miller frequency compensation. The design was created using a 0.35 µm CMOS fabrication process and analyzed...
The new trends in multimedia and especially in video applications demand the best possible quality, among with low bandwidth and memory usage. While video compression has been used for many decades, now is of even greater significance, particularly in the 4K and 8K UHD standards. In addition, the most time consuming and computationally expensive part of video compression, is the calculation of the...
This paper presents a generalization of Soliman's four-phase oscillator into the fractional-order domain. The extra degrees of freedom provided by the fractional-order parameters α and β add more flexibility to the design of the circuit. The design procedure and equations of the proposed oscillator are presented and verified using Matlab and PSPICE. Also, the stability analysis for fractional order...
Although professional agriculture engineers are responsible for the recognition of plant diseases, intelligent systems can be used for their diagnosis in early stages. The expert systems that have been proposed in the literature for this purpose, are often based on facts described by the user or image processing of plant photos in visible, infrared, light etc. The recognition of a disease can often...
Research progress in neuromorphic hardware, capable of biological perception and cognitive information processing, is leading the way towards a revolution in computing technology. Current research efforts have focused mainly on resistive switching devices, the electronic analog of synapses in artificial neural networks (ANNs), and the crossbar nanoarchitecture, for its huge connectivity and maximum...
A novel V/ƒ speed controller is proposed based on a fuzzy asymmetrical PWM modulation scheme and implemented with a low-cost microcontroller. The circuit is designed with a compact matrix converter with static free-wheeling path and achieves smooth regulation of the motor speed and high output power factor all over the dynamic range. The design is tested experimentally and is found to achieve superior...
An autonomous software module for the estimation of quantum circuit noise is preseneted. Quantum noise is stochastically generated in quantum systems as decoherence, or during gate operations. The simulation is allowed for a single data block made of qubits. A simple quantum error correction protocol runs with a selected quantum error correction code and the module estimates the probability that the...
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